Mechanism of Co3O4/graphene catalytic activity in Li-O-2 batteries using carbonate based electrolytes
- Authors
- Lim, Hee-Dae; Gwon, Hyeokjo; Kim, Haegyeom; Kim, Sung-Wook; Yoon, Taeho; Choi, Jang Wook; Oh, Seung M.; Kang, Kisuk
- Issue Date
- Feb-2013
- Publisher
- PERGAMON-ELSEVIER SCIENCE LTD
- Keywords
- Li-air battery; Graphene; Hybrid catalyst; Catalytic effect; Electrolyte
- Citation
- ELECTROCHIMICA ACTA, v.90, pp.63 - 70
- Indexed
- SCIE
SCOPUS
- Journal Title
- ELECTROCHIMICA ACTA
- Volume
- 90
- Start Page
- 63
- End Page
- 70
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/186216
- DOI
- 10.1016/j.electacta.2012.12.020
- ISSN
- 0013-4686
- Abstract
- We synthesized a hybrid graphene/Co3O4 catalyst by a simple chemical reduction method, and demonstrated that a Li-O-2 cell with the hybrid catalyst delivers a highly reversible capacity. We examined the role of the catalyst in Li-O-2 batteries and through careful analyses of the reactions in the battery, we found that the reaction path fundamentally changes with the use of catalyst, and propose a mechanism of how the rechargeability is improved in Li-O-2 batteries.
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